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timesync: remove square(), use pow instead

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In any case, the compiler generates the same code inline and never
actually calls the library function.
This commit is contained in:
Cristian Rodríguez 2014-12-23 17:52:51 -03:00 committed by Zbigniew Jędrzejewski-Szmek
parent 097df453da
commit fa66b606b1
1 changed files with 1 additions and 5 deletions
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6
src/timesync/timesyncd-manager.c
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@ -147,10 +147,6 @@ static double ts_to_d(const struct timespec *ts) {
return ts->tv_sec + (1.0e-9 * ts->tv_nsec); return ts->tv_sec + (1.0e-9 * ts->tv_nsec);
} }
static double square(double d) {
return d * d;
}
static int manager_timeout(sd_event_source *source, usec_t usec, void *userdata) { static int manager_timeout(sd_event_source *source, usec_t usec, void *userdata) {
_cleanup_free_ char *pretty = NULL; _cleanup_free_ char *pretty = NULL;
Manager *m = userdata; Manager *m = userdata;
@ -428,7 +424,7 @@ static bool manager_sample_spike_detection(Manager *m, double offset, double del
j = 0; j = 0;
for (i = 0; i < ELEMENTSOF(m->samples); i++) for (i = 0; i < ELEMENTSOF(m->samples); i++)
j += square(m->samples[i].offset - m->samples[idx_min].offset); j += pow(m->samples[i].offset - m->samples[idx_min].offset, 2);
m->samples_jitter = sqrt(j / (ELEMENTSOF(m->samples) - 1)); m->samples_jitter = sqrt(j / (ELEMENTSOF(m->samples) - 1));
/* ignore samples when resyncing */ /* ignore samples when resyncing */